Garry L. Peiffer

CIK 1521094 · Executive VP (See Remarks) · last filed 2026-05-19

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$16.88M

Companies

2

Total Filings

113

Lifetime Open-Market Net

$1.58M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
MPLX Director 136,119 $56.87 $7.74M $1.58M 101 2026-05-19
MPC Executive VP (See Remarks) 34,691 $263.58 $9.14M $0 12 2014-01-06

Recent Filings · Page 2 of 12

113 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2024-11-19 MPLX Grant (A) +1,098 $0 EDGAR
2024-10-03 MPLX Grant (A) +699 $0 EDGAR
2024-08-20 MPLX Grant (A) +1,047 $0 EDGAR
2024-07-03 MPLX Grant (A) +728 $0 EDGAR
2024-05-15 MPLX Grant (A) +1,041 $0 EDGAR
2024-04-03 MPLX Grant (A) +756 $0 EDGAR
2024-02-16 MPLX Grant (A) +1,083 $0 EDGAR
2024-01-04 MPLX Grant (A) +852 $0 EDGAR
2023-11-15 MPLX Grant (A) +1,123 $0 EDGAR
2023-10-04 MPLX Grant (A) +889 $0 EDGAR
Showing 1120 of 113
Page 2 of 12
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.